diff --git a/src/app/VtkSceneView.cpp b/src/app/VtkSceneView.cpp
index e335d4b..f5b9334 100644
--- a/src/app/VtkSceneView.cpp
+++ b/src/app/VtkSceneView.cpp
@@ -4,6 +4,9 @@
 #include <memory>
 #include <utility>
 
+#include <QDebug>
+#include <QString>
+
 #include <vtkActor.h>
 #include <vtkBoundingBox.h>
 #include <vtkCubeAxesActor.h>
@@ -184,7 +187,13 @@ void VtkSceneView::setAxes(geopro::controller::AxesMode mode, geopro::controller
 void VtkSceneView::applyCameraView(geopro::controller::ViewDir dir) {
     geopro::render::applyView(scene_.renderer(), toRenderViewDir(dir));  // 设朝向(内部 ResetCamera 含底图)
     double bounds[6];
-    if (computeDataBounds(bounds))
+    const bool ok = computeDataBounds(bounds);
+    qInfo() << "[view] 预设取景 computeDataBounds=" << ok << " ds数=" << int(dsProps_.size())
+            << (ok ? QString(" bounds[%1,%2 %3,%4 %5,%6]")
+                         .arg(bounds[0]).arg(bounds[1]).arg(bounds[2])
+                         .arg(bounds[3]).arg(bounds[4]).arg(bounds[5])
+                   : QString());
+    if (ok)
         scene_.renderer()->ResetCamera(bounds);  // 重新取景到数据(否则被~公里级底图推到超远)
     scene_.renderer()->ResetCameraClippingRange();  // 裁剪面含底图
     if (renderWindow_) renderWindow_->Render();
diff --git a/src/app/main.cpp b/src/app/main.cpp
index eefe90e..a9048ba 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -417,6 +417,9 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
     // 垂直夸张：地形须与剖面用同一 VE 才对齐(都按真实高程×VE)。
     QObject::connect(drawer->col3D(), &geopro::app::Column3DDataset::verticalExaggerationChanged,
                      basemap, [basemap](double ve) { basemap->setVerticalExaggeration(ve); });
+    // 单一来源：kVerticalExaggeration 一处定义，组合根下发到 控制器(上方259) / 底图 / UI 显示。
+    basemap->setVerticalExaggeration(kVerticalExaggeration);
+    drawer->col3D()->setVerticalExaggeration(kVerticalExaggeration);
 
     // ── 中央“空状态”引导浮层：未接入真实 sections 时，引导首次使用者从左侧入手。──
     // 透明背景 + 鼠标穿透（不挡 QVTK 交互）；CenterOverlay 随视口尺寸保持居中；
diff --git a/src/app/panels/columns/Column3DDataset.cpp b/src/app/panels/columns/Column3DDataset.cpp
index 6290b1e..2d5a34b 100644
--- a/src/app/panels/columns/Column3DDataset.cpp
+++ b/src/app/panels/columns/Column3DDataset.cpp
@@ -1,5 +1,7 @@
 #include "panels/columns/Column3DDataset.hpp"
 
+#include <algorithm>
+
 #include <QComboBox>
 #include <QFormLayout>
 #include <QHBoxLayout>
@@ -54,20 +56,20 @@ Column3DDataset::Column3DDataset(QWidget* parent) : QWidget(parent) {
         root->addLayout(form);
     }
 
-    // 水平/垂直比例（单滑块 + 数值）
+    // 水平/垂直比例（单滑块 + 数值）。初值为中性 1×(无夸张)；实际配置默认由组合根 setVerticalExaggeration 下发。
     {
         auto* row = new QHBoxLayout();
-        auto* slider = new QSlider(Qt::Horizontal);
-        slider->setMinimum(1);
-        slider->setMaximum(10);
-        slider->setValue(1);
-        auto* val = new QLabel(QStringLiteral("1.0×"));
-        connect(slider, &QSlider::valueChanged, this, [this, val](int v) {
-            val->setText(QStringLiteral("%1.0×").arg(v));
+        veSlider_ = new QSlider(Qt::Horizontal);
+        veSlider_->setMinimum(1);
+        veSlider_->setMaximum(10);
+        veSlider_->setValue(1);
+        veLabel_ = new QLabel(QStringLiteral("1.0×"));
+        connect(veSlider_, &QSlider::valueChanged, this, [this](int v) {
+            veLabel_->setText(QStringLiteral("%1.0×").arg(v));
             emit verticalExaggerationChanged(static_cast<double>(v));
         });
-        row->addWidget(slider, 1);
-        row->addWidget(val);
+        row->addWidget(veSlider_, 1);
+        row->addWidget(veLabel_);
         root->addWidget(new QLabel(QStringLiteral("水平/垂直比例")));
         root->addLayout(row);
     }
@@ -125,6 +127,13 @@ Column3DDataset::Column3DDataset(QWidget* parent) : QWidget(parent) {
     root->addWidget(list_, 1);
 }
 
+void Column3DDataset::setVerticalExaggeration(double ve) {
+    const int v = std::max(1, static_cast<int>(ve + 0.5));
+    QSignalBlocker block(veSlider_);  // 仅同步 UI 显示；传播由组合根分发，避免重复发信号
+    veSlider_->setValue(v);
+    veLabel_->setText(QStringLiteral("%1.0×").arg(v));
+}
+
 void Column3DDataset::setDatasets(const std::vector<geopro::data::DsRow>& rows) {
     {
         QSignalBlocker blocker(list_);
diff --git a/src/app/panels/columns/Column3DDataset.hpp b/src/app/panels/columns/Column3DDataset.hpp
index d0d8ead..09fd6bc 100644
--- a/src/app/panels/columns/Column3DDataset.hpp
+++ b/src/app/panels/columns/Column3DDataset.hpp
@@ -6,6 +6,8 @@
 #include "repo/RepoTypes.hpp"
 
 class QTreeWidget;
+class QSlider;
+class QLabel;
 
 namespace geopro::app {
 
@@ -15,6 +17,7 @@ class Column3DDataset : public QWidget {
 public:
     explicit Column3DDataset(QWidget* parent = nullptr);
     void setDatasets(const std::vector<geopro::data::DsRow>& rows);
+    void setVerticalExaggeration(double ve);  // 组合根下发配置默认值(仅同步UI显示，不重复发信号)
 
 signals:
     void axesModeChanged(geopro::controller::AxesMode mode);
@@ -30,6 +33,8 @@ signals:
 
 private:
     QTreeWidget* list_ = nullptr;
+    QSlider* veSlider_ = nullptr;  // 水平/垂直比例滑块
+    QLabel* veLabel_ = nullptr;
 };
 
 }  // namespace geopro::app